CN206103432U - Degradable hangs down device that subsides of phosphoric acid by wet process solid content - Google Patents
Degradable hangs down device that subsides of phosphoric acid by wet process solid content Download PDFInfo
- Publication number
- CN206103432U CN206103432U CN201620863038.6U CN201620863038U CN206103432U CN 206103432 U CN206103432 U CN 206103432U CN 201620863038 U CN201620863038 U CN 201620863038U CN 206103432 U CN206103432 U CN 206103432U
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- acid
- phosphoric acid
- solid content
- cell body
- wet process
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Abstract
The utility model discloses a degradable hangs down device that subsides of phosphoric acid by wet process solid content belongs to phosphoric acid manufacture equipment technical field, including subsiding cell body and upper cover, but subside the mud scraper that is equipped with continuous operation in the cell body, the sour ring canal of the external row of being equipped with of subsider, arrange sour ring canal through a plurality of overflow pipes with subside the cell body intercommunication, arrange sour ring canal through row acid tube with down for the acid tube pump feed through, lower for the acid tube pump deliver to the finishing room with acid, it is equipped with toper row cinder notch to subside the cell body bottom, the toper is arranged the cinder notch exit end and is equipped with scum pipe and a plurality of clearance valve, scum pipe and row's pulp pump intercommunication. Solid content in the separable rare phosphoric acid of this technical scheme, also acid through advancing sour draft tube, the sour ring canal of row, arranging acid tube and valve structure, has been realized advancing in succession by the solid content in the separable dense phosphoric acid, and continuous precipitation phosphoric acid, successive layer go out acid in succession, obtain few qualified rare phosphoric acid or the dense phosphoric acid of solid content, and production efficiency and product quality all obtain improving.
Description
Technical field
The utility model belongs to phosphoric acid production equipment technical field, is related to solid impurity content in a kind of reduction phosphoric acid production
Device, more particularly, to a kind of sedimentation device for reducing phosphoric acid by wet process solid content.
Background technology
Phosphoric acid is a kind of important intermediate chemicals, and industrialized phosphoric acid production method mainly has two big class, and a class is
Hot method, gained phosphoric acid claims thermal phosphoric acid, and because its quality is higher, impurity content is few, mainly for the production of phosphate, does the raw material of industry
Or additive；It is another kind of for wet method, gained phosphoric acid claims phosphoric acid by wet process, because it contains the plurality of impurities such as iron, aluminium, magnesium, is generally used for
Production fertilizer.
The characteristics of with sulfuric acid decomposition phosphorus ore significant reaction be decompose after product in addition to phosphoric acid solution, while also generating two
H 2 O calcium sulphate, calcium sulphate dihydrate is a kind of solid of solubility very little, although can be realized by simple liquid, solid separative element
Phosphoric acid is separated with calcium sulphate dihydrate, but phosphate ore pulp and sulfuric acid in phosphoric acid extraction groove when being reacted, because technology controlling and process is caused
Calcium sulphate dihydrate also has a large amount of tiny gypsum crystals, and slip liquid-solid ratio is about 1.8～2.5：1, it is isolated by filtration to obtain phosphoric acid
Concentration is 24-27%, and many tiny ardealite crystal grain and the impurity for being dissolved into acid can enter through cake layer in filter process
In entering phosphoric acid,diluted, the solid content of phosphoric acid,diluted also has 2% or so, and solid content is still too high；Phosphoric acid,diluted is after being deposited to less than 1%
Being sent to concentration systems and carrying out concentration becomes SPA, and the SPA concentration after concentration is more than 46%, and solid content is 4-8%.Because containing
Gu amount height can have a strong impact on phosphoric acid quality and phosphate fertilizer product quality, therefore need to carry out settlement treatment to phosphoric acid,diluted and SPA, make
The solid content of phosphoric acid,diluted is less than 1%, and the solid content of SPA is less than 2%, is then sent through production of phosphate fertilizer system, production MAP and
Diammonium phosphate (DAP).
During sulfuric acid decomposition phosphorus ore extractive reaction, temperature has 80-90 DEG C, has part acid non-soluble substance to be dissolved in acid
In, when temperature is reduced, can parse, crystallize out in solid form, entering concentration systems, the raising of phosphoric acid concentration, dissolving
Part acid non-soluble substance in acid, is also precipitated out in concentrated acid with solid crystal.Due to solid containing ardealite etc. in phosphoric acid
Body impurity, can affect phosphate fertilizer product quality, it is necessary to remove impurity therein in phosphoric acid,diluted and SPA production process, it is ensured that produce
Quality.
There are mechanical filtration method (such as surface filtration), gravitational settling falling temperature method during phosphoric acid impurity is removed.Mechanical filter
Method has the ultra-fine ardealite crystal in part and the acid non-soluble substance that is dissolved in acid can also enter to filter in phosphoric acid in filter process, shadow
Ring subsequent processing product quality.Gravitational settling falling temperature method is to separate a kind of reasonable method of impurity at present.
But existing gravitational settling heat sink is present where some inconveniences, can not such as realize that series classification is settled,
Can not be while entering acid, one side continuously goes out acid；Slag after sedimentation can not be completely exhausted out, and easily blocking, cause mud scraper locking, need
Shut down and heavy acid device is cleared up, affect production efficiency；Only one of which acid mouth, solid content is wayward；Container is hardly
Can lower the temperature, the acid non-soluble substance being dissolved in acid cannot be efficiently separated.
Utility model content
In order to solve the above problems, the utility model provides a kind of sedimentation device for reducing phosphoric acid by wet process solid content,
Acid cooling by gravitational settling and in infall process parses part acid non-soluble substance and sediment, reduces solid content in acid,
Ensure the quality of phosphate fertilizer product, it is ensured that being normally carried out for phosphate fertilizer technique productions, make production in slave mode, prevent product
Quality accident.
The utility model is achieved by following technical solution.
A kind of sedimentation device for reducing phosphoric acid by wet process solid content, including sedimentation cell body and upper lid, in the sedimentation cell body
The mud scraper of continuously-running is provided with, the subsider is provided with vitro acid discharge endless tube, and acid discharge endless tube passes through some overflow pipes and sinks
Drop cell body connection, acid discharge endless tube is connected with lower acid tube by ACID with pump, and acid is delivered to finishing room by lower acid tube pump；It is described
Sedimentation cell body bottom is provided with taper slag-drip opening, and the taper slag-drip opening port of export is provided with scum pipe and some cleaning valves, deslagging
Pipe is connected with deslagging pump.
The subsider body wall is provided with the different valve of some height, and each valve two ends connect ACID with sedimentation cell body
It is logical.
The mud scraper includes scraper plate, power transmission shaft and pull bar, and scraper plate is fixed on power transmission shaft lower end, power transmission shaft upper end with scrape mud
Machine actuating device connects, and pull bar is arranged between scraper plate and power transmission shaft；Power transmission shaft bottom is provided with agitating type discharger, agitating type
Discharger is arranged in the taper slag-drip opening of sedimentation cell body bottom, is rotated together with power transmission shaft.
The upper lid is provided with into sour guide shell, is entered sour guide shell and is reached subsider bottom, enters sour guide shell lower port position
In mud scraper pull bar top；Enter to be provided with sour guide shell acid inlet tube and phosphoric acid purification flocculant adds pipe, acid inlet tube and phosphoric acid are net
Changing flocculant adds the port of export of pipe to there is difference in height.
It is described enter sour guide shell lower port be located at mud scraper pull bar top 500mm at.
The overflow pipe is at least 4, and is circumferentially evenly arranged.
The sedimentation cell body is steel body structure, and liner rubber carries out anti-corrosion, after the lining rubber of bottom, then in rubber surface lining stone
Black plate, prevents from washing away.
Low in the middle of the scraper plate of the mud scraper, both sides are high, and scraper plate and bottom land angle are 5 degree, be adjusted by pull bar and
Stress is strengthened.
The cleaning valve is located on the conical surface of taper slag-drip opening.
The beneficial effects of the utility model are：
A kind of sedimentation device for reducing phosphoric acid by wet process solid content described in the utility model, containing in separable phosphoric acid,diluted
Gu amount, also the solid content in separable SPA, by entering sour guide shell, acid discharge endless tube, ACID and valve mechanism, realizes
Continuously enter acid, continuous precipitation phosphoric acid successively continuously goes out acid, obtains the few qualified phosphoric acid,diluted of solid content or SPA, production efficiency
It is improved with product quality；And while there is multiple acid mouths while go out acid, can accelerate out the speed of acid, and acid discharge ring
Pipe be located at compared with high level, and can be in acid solid content, by control longitudinal direction valve realize be classified out acid, in making liquid acid
Solid content be effectively controlled.
Meanwhile, sour guide shell is entered, phosphoric acid feed pipe and phosphoric acid purification flocculant feed pipe are set, two tubes form one
Determine the discrepancy in elevation, and tube outlet angle is relative, is capable of achieving acid and is pre-mixed with purification flocculant.
Mud scraper forms an angle with bottom shape, and bottom surface forms certain slope using slag, in can scraping by the slag of cell wall
Heart cylinder position, is capable of achieving continuous discharging slag.
By using agitating type discharger, adding the design of scum pipe and cleaning valve so that be difficult in taper slag-drip opening
Precipitum is formed, even if forming a small amount of precipitum, also can in time be cleared up by clearing up valve, solid slag is discharged in time,
It is difficult to result in blockage, it is ensured that mud scraper continuous and steady operation, it is to avoid shut down cleaning, ensured production efficiency.
Sedimentation cell body container good cooling effect, acid enters fast cooling after container, is dissolved in acid non-soluble substance in acid quickly
Separate out, precipitate rapidly in the presence of flocculant, efficiently separated.
Description of the drawings
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the arrangement schematic diagram of acid discharge endless tube and mud scraper in the utility model.
In figure：1- settles cell body, and 101- taper slag-drip openings, 2- supporting legs, 3- deslagging pumps, 4- acid discharge endless tubes are covered on 5-, and 6- enters
Sour guide shell, 7- acid inlet tubes, 8- phosphoric acid purifications flocculant adds pipe, 9- ACIDs, 10- mud scrapers, 1001- scraper plates, 1002- to pass
Moving axis, 1003- pull bars, 1004- agitating type dischargers, acid tube pump under 11-, 12- scum pipes, 13- cleaning valves, 14- overflows
Pipe, 15- valves, 16- mud scraper driving means, 17- centre bores, 18- top boards.
Specific embodiment
The technical solution of the utility model is further described below in conjunction with the accompanying drawings, but claimed scope is not limited to
It is described.
As shown in Figure 1 and Figure 2, a kind of sedimentation device for reducing phosphoric acid by wet process solid content described in the utility model, including
Sedimentation cell body 1 and upper lid 5, are provided with the mud scraper 10 of continuously-running in the sedimentation cell body 1, the sedimentation cell body 1 is externally provided with
Acid discharge endless tube 4, acid discharge endless tube 4 is connected by some overflow pipes 14 with sedimentation cell body 1, and acid discharge endless tube 4 is by ACID 9 and lower acid
Effective pump 11 is connected, and acid is delivered to finishing room by lower acid tube pump 11；Sedimentation cell body 1 bottom is provided with taper slag-drip opening 101,
The port of export of taper slag-drip opening 101 is provided with scum pipe 12 and some cleaning valves 13, and scum pipe 12 is connected with deslagging pump 3.
The sedimentation wall of cell body 1 is provided with the different valve 15 of some height, and the two ends of each valve 15 are by ACID 9 and settle
Cell body 1 is connected.Valve 15 can be from top to bottom opened when clear groove is needed and successively be put acid, it is ensured that the solid content of phosphoric acid is minimum,
Realize step emission.The quantity of the valve 15 is 4 groups.
The mud scraper 10 includes scraper plate 1001, power transmission shaft 1002 and pull bar 1003, and scraper plate 1001 is fixed on power transmission shaft
1002 lower ends, the upper end of power transmission shaft 1002 is connected through the centre bore 17 of upper lid 5 with mud scraper driving means 16, and driving means 16 are consolidated
It is scheduled on the top board 18 supported by some supporting legs 2, pull bar 1003 is set between scraper plate 1001 and power transmission shaft 1002；Power transmission shaft
1002 bottoms are provided with agitating type discharger 1004, and agitating type discharger 1004 is arranged on the taper deslagging of sedimentation cell body 1 bottom
In mouth 101.
The upper lid 5 is provided with into sour guide shell 6, is entered sour guide shell 6 and is reached subsider bottom, enters the lower end of sour guide shell 6
Mouth is located at the top of 10 pull bar of mud scraper 1003；Enter to be provided with sour guide shell 6 acid inlet tube 7 and phosphoric acid purification flocculant adds pipe 8, enter
Acid tube 7 and phosphoric acid purification flocculant add the port of export of pipe 8 to there is difference in height, and tube outlet angle is relative, be capable of achieving it is sour with it is net
Change flocculant to be pre-mixed.
The sedimentation cell body 1 is cylinder, a diameter of 14-25 rice.
It is described enter the lower port of sour guide shell 6 be located at the top 500mm of 10 pull bar of mud scraper 18 at.
The overflow pipe 14 is at least 4, and is circumferentially evenly arranged.
The sedimentation cell body 1 is steel body structure, and liner rubber carries out anti-corrosion, after the lining rubber of bottom, then in rubber surface lining
Graphite cake, prevents from washing away.
Embodiment
When this device works, the phosphoric acid,diluted come from phosphoric acid workshop or SPA are from the acid inlet tube 7 for entering installation on sour guide shell 6
Into entering in sour guide shell 6, the solid content for settling the bottom of cell body 1 is acted on by gravitational settling and is higher than top, while net from phosphoric acid
Changing flocculant adds pipe 8 to add the phosphoric acid of flocculant polyacrylamide, addition to add with phosphoric acid purification flocculant using acid inlet tube 7
Entering in sour guide shell 6 to be sufficiently mixed, mixed acid carries out weight to the discrepancy in elevation of pipe 8 by entering sour guide shell 6 and entering sedimentation cell body 1
Power is settled.Enter sour guide shell 6 for 316L stainless steels, in the part for entering sour guide shell 6 and exposing acid solution face rubber is served as a contrast, prevent fluorine rotten
Erosion.
Due to adding flocculant, condense can the solid in acid and grow up, by Action of Gravity Field sedimentation cell body 1 bottom is sunk to,
Ardealite solid is scraped in the taper slag-drip opening 101 at the middle part of sedimentation cell body 1, then by agitating type discharger by mud scraper 10
1004 and deslagging pump 3 be extracted into next device.
Low in the middle of the scraper plate 1001 of mud scraper 10, both sides are high, and scraper plate 1001 and bottom land angle are 5 degree, by pull bar 1003
It is adjusted strengthening with stress, when mud scraper 10 runs, sedimentation cell body 1 bottom forms certain domatic, by ardealite solid content
Scrape from the sedimentation cell wall of cell body 1 and carry out deslagging at tapered centre slag-drip opening 101.
Clear acid after sedimentation is rested in sedimentation cell body 1, is uniformly distributed by 4 arranged on the sedimentation cell wall of cell body 1
Overflow pipe 14 enter in acid discharge endless tube 4, then passed through into lower acid tube pump 11 by the ACID 9 that connect with acid discharge endless tube 4
Lower acid tube pump 11 is transported to finished product production of phosphate fertilizer unit.When clear groove is needed, valve 15 can be successively opened from top to bottom is carried out
Successively put acid, it is ensured that the solid content of phosphoric acid is minimum, realizes step emission.
Sedimentation cell body 1 is steel body structure, and liner rubber carries out anti-corrosion, after the lining rubber of bottom, also to serve as a contrast graphite cake, prevents punching
Brush, damages rubber and cell body.Due to settling a diameter of 14-25 rice of cell body 1, steel body structure and easy heat radiation, 80 DEG C or so high temperature phosphorous
Acid is entered after sedimentation cell body 1, and temperature can be reduced to 40 DEG C, and sour temperature is reduced, and the acid non-soluble substance being dissolved in acid is reduced because of temperature
And separate out, solid crystal is formed in the presence of flocculant, bottom is deposited to, discharge from taper slag-drip opening 101.
When needing to clear up taper slag-drip opening 101, the cleaning valve 13 on the conical surface of taper slag-drip opening 101 can be opened, i.e.,
Residual mixture in taper slag-drip opening 101 can be cleared up.
The technical program is in order to the phosphoric acid,diluted or SPA continuously to there is solid content is settled, while in infall process
It is middle to reduce acid temperature, quickly parse sediment；And settle after clear acid, again can by acid discharge endless tube 4, ACID 9 and
The valve 15 that can be opened successively from high to low, realization is successively released, and finally realizes continuous separation of solid and liquid.
Claims (9)
1. a kind of sedimentation device for reducing phosphoric acid by wet process solid content, including sedimentation cell body (1) and upper lid (5), the subsider
The mud scraper (10) of continuously-running is provided with body (1), it is characterised in that：Sedimentation cell body (1) is externally provided with acid discharge endless tube
(4), acid discharge endless tube (4) connect by some overflow pipes (14) with sedimentation cell body (1), acid discharge endless tube (4) by ACID (9) and
Lower acid tube is connected with pump (11), and acid is delivered to finishing room by lower acid tube pump (11)；Sedimentation cell body (1) bottom is provided with taper
Slag-drip opening (101), taper slag-drip opening (101) port of export is provided with scum pipe (12) and some cleanings valve (13), scum pipe
(12) connect with deslagging pump (3).
2. a kind of sedimentation device for reducing phosphoric acid by wet process solid content according to claim 1, it is characterised in that：It is described heavy
Drop cell body (1) wall is provided with the different valves of some height (15), and each valve (15) two ends are by ACID (9) and settle cell body
(1) connect.
3. a kind of sedimentation device for reducing phosphoric acid by wet process solid content according to claim 1, it is characterised in that：It is described to scrape
Mud machine (10) includes scraper plate (1001), power transmission shaft (1002) and pull bar (1003), and scraper plate (1001) is fixed on power transmission shaft (1002)
Lower end, power transmission shaft (1002) upper end is connected with mud scraper driving means (16), between scraper plate (1001) and power transmission shaft (1002)
Pull bar (1003) is set；Power transmission shaft (1002) bottom is provided with agitating type discharger (1004), agitating type discharger (1004) peace
In being mounted in the taper slag-drip opening (101) of sedimentation cell body (1) bottom.
4. a kind of sedimentation device for reducing phosphoric acid by wet process solid content according to claim 1, it is characterised in that：On described
Lid (5) is provided with into sour guide shell (6), is entered sour guide shell (6) and is reached subsider bottom, is entered sour guide shell (6) lower port and is located at
Mud scraper (10) pull bar (1003) top；Enter to be provided with sour guide shell (6) acid inlet tube (7) and phosphoric acid purification flocculant adds pipe
(8), acid inlet tube (7) and phosphoric acid purification flocculant add the port of export of pipe (8) to there is difference in height.
5. a kind of sedimentation device for reducing phosphoric acid by wet process solid content according to claim 4, it is characterised in that：It is described enter
Sour guide shell (6) lower port is located at the 500mm of mud scraper (10) pull bar (18) top.
6. a kind of sedimentation device for reducing phosphoric acid by wet process solid content according to claim 1, it is characterised in that：It is described to overflow
Flow tube (14) is at least 4, and is circumferentially evenly arranged.
7. a kind of sedimentation device for reducing phosphoric acid by wet process solid content according to claim 1, it is characterised in that：It is described heavy
Drop cell body (1) is steel body structure, and liner rubber carries out anti-corrosion, after the lining rubber of bottom, then serves as a contrast graphite cake in rubber surface, prevents punching
Brush.
8. a kind of sedimentation device for reducing phosphoric acid by wet process solid content according to claim 1, it is characterised in that：It is described to scrape
Low in the middle of the scraper plate (1001) of mud machine (10), both sides are high, and scraper plate (1001) and bottom land angle are 5 degree, are entered by pull bar (1003)
Row is adjusted and stress is strengthened.
9. a kind of sedimentation device for reducing phosphoric acid by wet process solid content according to claim 1, it is characterised in that：It is described clear
Reason valve (13) is on the conical surface of taper slag-drip opening (101).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620863038.6U CN206103432U (en) | 2016-08-11 | 2016-08-11 | Degradable hangs down device that subsides of phosphoric acid by wet process solid content |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620863038.6U CN206103432U (en) | 2016-08-11 | 2016-08-11 | Degradable hangs down device that subsides of phosphoric acid by wet process solid content |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206103432U true CN206103432U (en) | 2017-04-19 |
Family
ID=58512417
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620863038.6U Expired - Fee Related CN206103432U (en) | 2016-08-11 | 2016-08-11 | Degradable hangs down device that subsides of phosphoric acid by wet process solid content |
Country Status (1)
| Country | Link |
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| CN (1) | CN206103432U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106334350A (en) * | 2016-08-11 | 2017-01-18 | 贵州开磷集团股份有限公司 | Settling tank for continuous separation of wet phosphoric acid solid content |
| CN106955512A (en) * | 2017-05-03 | 2017-07-18 | 茌平信发华宇氧化铝有限公司 | Subsider mud layer automatic control system |
| CN110237667A (en) * | 2019-07-19 | 2019-09-17 | 中冶焦耐(大连)工程技术有限公司 | Gravity separation processing coking sulphur foam produces the technique and system of sulphur slurry |
| CN112939071A (en) * | 2021-02-22 | 2021-06-11 | 安徽英特力工业工程技术有限公司 | Preparation and storage method of titanium tetrachloride crystal seed |
-
2016
- 2016-08-11 CN CN201620863038.6U patent/CN206103432U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106334350A (en) * | 2016-08-11 | 2017-01-18 | 贵州开磷集团股份有限公司 | Settling tank for continuous separation of wet phosphoric acid solid content |
| CN106334350B (en) * | 2016-08-11 | 2018-11-13 | 贵州开磷集团股份有限公司 | A kind of subsider of continuous separation phosphoric acid by wet process solid content |
| CN106955512A (en) * | 2017-05-03 | 2017-07-18 | 茌平信发华宇氧化铝有限公司 | Subsider mud layer automatic control system |
| CN110237667A (en) * | 2019-07-19 | 2019-09-17 | 中冶焦耐(大连)工程技术有限公司 | Gravity separation processing coking sulphur foam produces the technique and system of sulphur slurry |
| CN112939071A (en) * | 2021-02-22 | 2021-06-11 | 安徽英特力工业工程技术有限公司 | Preparation and storage method of titanium tetrachloride crystal seed |
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| GR01 | Patent grant | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
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| CF01 | Termination of patent right due to non-payment of annual fee |